jackson



2 Sheets- Sheet 1.

(No Mbdel.)

B A; JACKSON. VENTILATING GRATE.

No. 353,066. Patented Nov. 23,1 86.

IA/ VE/VTO/i Alforney N. PCTERi PholvLilhcgmpIwr. Washington. D. c.

2 Sh 1: Sheet 2. (No Model) B. A. JACKSON. 09 s VENTILATING GRATE. No. 353,066. Patented Nov. 23, 1886.

glu uc nloz j zzy iJ'ao/doh @513 l d; all 0741C NITED STATES PATENT I OFFICE.

EDWIN A. JACKSON, OF NEW YORK, N. Y.

VENTILATING-GRA'II'E.

SPECIFICATION forming part of Letters Patent No.'353,066, dated November 23, 1886.

Application filed April 3, 1l386. Serial No. 197,61), (No model.)

To all whom it 17mg concern.-

Be it known that I, EDWIN A. JACKSON, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Ventilating-Grates; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My present invention relates to improvements in the construction of ventilating-grates and other similar heating apparatus; andsaid improvements consist, essentially, of an inclosing frame or jacket formed with a double air space or recess, for more effectually supplying and saving heat, and with a novel construction and arrangement of deflecting plates or partitions, to force the air to take an indirect course to subject the same to the full action of the fire before passing out through the heat-conducting fines or openings.

It further consists in certain novel details of construction and general arrangement of parts, all as will be hereinafter fully described, and specifically pointed out in the claims.

In the. accompanying drawings, Figure 1 represents a vertical transverse section of a ventilating grate embodying my improvements; Fig. 1, a sectional View of the opening and valve which regulate the air-supply; Fig. 2, a detail sectional View thereof, and Fig. 3 a transverse vertical section of the entire apparatus.

Similar letters of reference indicate likeparts in all the figures.

Referring to the drawings, A represents the grate, with its inclosing shell or jacket, having the top plates, B B, thereof provided with a series of smoke flues or ,openings, G, located upon each side of a centrally-arranged heatconducting pipe, D, provided with a damper,

D, which is operated by a rod, 01, as shown.

E represents an opening -in the rear lower part of the shell or jacket, through which pure air from the outer atmosphere is admitted into the-air chambers or recesses f, between the walls f of the inclosing case or jacket, said opening E being provided with asuitable plate or cover, a, adapted to be operated by a rod, b, from the front part of ,the grate, to open or close said opening at pleasure.

The'top plates, B B, are located at suitable distances apart, and are provided with an intervening plate, F, which is adapted to rest upon ribs 0 upon the lower plate, B, between the two central smoke-fines, 0, said plate F constituting the bottom of the heat-conducting flue or pipe D, while a vertically-arranged and rear plate, F, projecting upwardly from the plate F, forms the rear wall of said heat-conducting fine, the construction being such as to force the heated air in the recesses f, between the walls f and shell of the inclosing-jacket, to take an indirect course upward over the first top plate, B, of the grate, and around the inner walls, e, of the smoke-fines O, to subject the air to the direct heat of the same preparatory to being conducted up the central pipe or flue, D, to apartments above.

. Anauxiliary wall or jacket, G, is provided upon the rear of the inclosing'frame or jacket, to provide an air-space for more effectually saving the heat where'the grate is set in an outside wall or chimney.

In the operation of my improved construction pure air from outdoors is admitted through the opening E in the rear lower part of the shell or jacket, and is distributed uniformly over the entire heating-surface of the recesses in the surrounding shell or jacket by means of the heated spurs (1, directly back of and on the sides of the fire. From said recesses the partially-heated air enters the space between the top plates, B B, passing around the walls e of the smoke-fines G, and over the plate B, each of which imparts its heat to the passing current until it is finally discharged out of the openings in the frieze of the grate, or conducted up the pipe D to apartments above, which may be regulated by dampers a: and D, the intervening plates, F F, causing the heated current of air to take an indirect course upward over the heated surface of the ,plate B and inner walls, e, of the smoke-fines 0 before passing up the heat-conducting flue or pipe D.

Having thus described my invention, I claim as new and useful 1. In a heating apparatus, the combination, with theinner casinghavingagrate,ofthe outer casing forming with said inner easing an airflue, the top plates, B B, the deflectors F F,and the ribs 0, located between the top plates and the smoke-fines for the products of combustion, extending from the interior of the inner casing through the chamber between the top plates on either side of the deflector F, as set forth.

2. In a heating apparatus, the combination, with the top plates, the deflectors F E, and the ribs 0, 0f the inner and outer casing forming an air-flue, as shown and described.

EDWIN A. J AOKSON.

Witnesses:

WM. M. JACKSON, S. K. J. THOMPSON. 

